Numerical study on a pile subjected to seismic loading in crushable soil
Numerical study on a pile subjected to seismic loading in crushable soil
The response of a pile embedded in crushable sand to earthquake loading is studied using finite elements. For this purpose, a bounding surface plasticity soil model is enhanced to include grain breakage via evolution in the critical state line. The adaptive Runge-Kutta-Fehlberg stress integration method is used for numerical implementation of the constitutive model. The model is implemented into the finite element programme (ABAQUS) as a user-defined material. The predictive ability of the improved model is tested against laboratory tests, and the pile response is validated using simulation results from the literature. The effect of particle breakage on the evolution of the pore water pressure ratio is investigated. According to the simulation results, particle crushing occurs primarily during the early stages of seismic excitation and increases pore water pressure, making the pile more prone to liquefaction. A significant increase in pore water pressure increases liquefaction susceptibility
Mohd Saqib; Arghya Das; N. R. Patra
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
4. Geotechnical earthquake engineering
https://doi.org/10.53243/NUMGE2023-401
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